To summarize it (for really modern 64-bit CPUs, i.e. roughly starting from 2019-2021): in spite of all the improvements made, division is still Darn Expensive™ (though not as atrociously expensive as it used to be)while since about 2020, the difference between 32-bit and 64-bit division is not that drastic, it still existsas for multiplication – it is almost the same for 32-bit and 64-bit versions

